|Have no idea about speed comparisons. However my I5 4690 and mint cinnamon 19.1 typically run 2 virtualbox linux guests and one windows guest.|
My base machine usually has a video game up with one linux guest streaming a movie, while the windows guest runs my MT trading platform.
All without any "speed" issues ... also only reason have any Windows running is lack of good linux trade platform.
Not a typical gamer but do run Stardew Valley, The lone dark, Open MW without issues. Also no issues adding a DOS 7 guest and ascendancy or capplus to the above.
PS In addition my system has 2 monitors with Nvidia card which also can put a drain on the OS but no issues with my situation.